Coal-feeder for mechanical stokers.



H. E. PARSON.

GOAL EEEDEE EOE MECHANICAL sToKERs.

APPLIOATION FILED 00T. 18,1905.

Patented May 16, 1911.

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APPLICATION FILED 00T. 18,1905.

Patented May 16, 1911.

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H. B. PARSCN.

COAL FEEDER FOR MECHANICAL STOKBRS.

APPLICATION FILED 0OT.18,1905.

initiieren snare HENRY EDWIN PARSON, F NEW YORK, N. Y.

CUAIrFEElDER FOR MECHANICAL STOKERS.

oeaese.

originari application filed February 2li, 1905, Serial No. 247mm.

Specification of Letters Patent.

ie, roca serial no. accese.

To all whom fl may concern:

lle it known that l, llenar E. lansoN, a citizen of the United States ot America, and resident of the `city of New York, county and filtate of New York', have invented certain new and useful Improvements in Coaldleed ers for Mechanical Stokers, of which the following,1 is a specification.

lt/l'y invention relates to a mechanical stolrer and has for its object to provide a stolrer in which any kind ol coal may be burned with equally goed ellect.

The special elements or novelty in this invention consists et a coal feedingu device actuated by power and reciprocating in the bottoni of a coal hopper with a coal deilector located over it so as to maintain a pressure of coal on the forward end oi" the coal feeder While leaving the rear end tree ot pressure. Also, a long; throat through 'which coal is fed to the :tire chamber and at the end of Which sott cool will be colrcd as it is presented to the action ot the tire; a plattform beyond the end oit the throat on which the coal lies whilev colninp;u A series oit irnuclrles or breakers are located at the of the platform to brcalr and disintc the coke as fast as it is All iormed. anailiary blast, entering the Ltnrnace above the throat, delivers hot air to the lire chamber.

'.lhis application is a division oi my ap plication Serial No. 2427,083, .tiled February s2/l, i905 and covers a construction shown and 35 t'. ribed therein, but not claimed...

aet'erring to the drawings wherein the saine part is designated by the saine reifere-icc numeral 'wherever it occurs,

a 'vertical longitudinal section olf a 4U up; and furnace embodying my inven- 2 is a vertical transverse secton or c boiler and lire boit on line wl oi It, except that in the right hand side oit tlc lig. re the breakers are shown in :trent elevation instead ot in section. lli E is a sputire View ci detached ot the coal feeding device and et the lever and rod connections by which. it'and title colte breath and @rates are operated. ll l l is i, porspective detail ol. the pair or: the colte brea" irrinpg to Fig.. l, l desionates the iront a furnace, 2 the `b.`.c. vf/all, i a l t a brick arch support nr the iroi peilen1 e the asb pit, o o blast chain 7 a blower pipe delivering air under pressure into the chamber (i through which it passes up through the gratcs. 8 are the gratos which are shown as of the iuel advancing' type. These gratos are specifically described and claimed in my application Serial No. l283,285 filed @ctobcr 18, 1905, to Which l make reference ttor a full description thereof.

9 is a closed chamber between the exterior Wall l ci the furnace and the blast chamber t3, l0 is a door in the vWall l for entrance into the chamber t) and ll is a door in the rear 'Wall oit the chamber D ior admission into the blast chamber G.

19; is a coal hopper located in tront ot thc :trent wall oi the 'furnace and mounted on supports i3 having an upper portion 'lll which is hinged to the lower portion at l5.

1G is a coal dcllectoi pivotcd within the upper portion ot' the hopper below its center at il' tor the purpose relieving to some extent the lower port ot tbc dcllector from. the pressure d uc to the weight oi the coal above the coal feeder. 'lhc lower portion ol thc hopper stationary and, :for the purpose ol. clcarncss is numbered iti. .lhc portion ot the hopper 18 has an .inclined bottoni in clined downward toward the furnace and an elon gated throat l) which projects through thc iront wall oi the :l'nrnace and into the lire chamber.

2O is a colrinp; plattform projecting; beyond the end ol the throat ou. the lower side ther-cont.

Ell a coal i'oedcr sbotvn in detail in Alliigg'. il; consists ot a br shaped castingi inverted and rut/ing; upon the inclined bottom oit' the hop 0 "W5 are two lingers projactingV from the oy C ratito 'taco oit the pusher on the level ot thc bottom or the hopper lor 'the purpose ol2 preventie pusher :trom tilting loro tt ward fri/o. is appli Jd to it at the lntt't journclcd in the iframes nro cranlrs last upon the roclr i connected at their ends to the il., or oit the coal :te ill by linls lo connected to the side oit tccdei. opposite its operative taco. E2G i :ond roch arno, tast upon the roch shalt and has pivoted to its lower end sleeve Ell.

i c porri.` driven red which passes throngo the sleeve ll.. tlie rod m no is sieren l il threaded and on it are nuts 29-30. The stroke of the rodv 28 is constant, but by changing the position of the nuts 293O in relation to the sleeve 27, any desired stroke may be given to the feeder 21 within the limit of the stroke of the rod.

31-31 are a series of coke breakers located between the upper end of the grate and the extremity of the coking platform. The coke breakers are shown in detail perspective in Fig. 4 and they consist of hollow castings having a curved surface on both ends struck from their pivotal center and also a flat surface or preferably two plane surfaces on top at an angle to each other.

32 is a frame in which the breakers are mounted in pairs side by side. rlhe frame 32 is supported at its upper end upon the end' of the coking platform 20 and below upon the partition between the blast chamber 6 and the chamber 9. This frame is divided into sections by partitions and in each section a pair of coke breakers are mounted.

33 is a shaft mounted in the frame 32 and on which all the coke breakers are looselyk journaled.

Projecting from the lower side of each breaker is an arm 34, the arms of all the coke breakers being similarly located in relation to the breakers. l

35 is a rock shaft journaled in bearings mounted upon the frame 13. lt is shown in perspective in Fig. 3. j

,36 and 37 are two series of cranks secured tothe shaft 35 and projecting horizontally, one lseries projecting in one direction and the other in the opposite direction, one series being connected by means of links with one set of coke breakers and the other series to the other set of coke breakers, adjacent cranks which project in opposite directions from each other being connected to adjacent breakers so as to give to the adjacent breakers a motion with the result that as'the shaft is rocked one-half of the breakers will be up and one-half down, the motion of alternate breakers being in opposite directions.

38 is a crank secured to the shaft 35 and projecting downward and is connected by means of a link 39 with the power driven rod, 40, which at one end is provided witlr a threaded portion 41. As shown, the

threaded portion 41 is not integral with the 46 is a crank secured to the shaft 45 and extending downwardly andy pivotally connected at itsl lower end to the sleeve 44.

47 is a crank arm secured to the shaft 45 and depending therefrom and connected at its lower end to any suitable motor or engine by means of which the entire stoker mechanism maybe driven. In Fig. 1, I have 'shown a rod 48 by means of which the crank 47 may be connected to the motor.

In the form of .my invention herein shown, the grates are given a reciprocating movenient in order to cause them to feed the fuel down the grates. In order to cause the feeding movement of the grates, the frames 49 which support and actuate the movable section are supported on rollers 50-50 which run upon suitable flanges.y To the frame 49 at one end is connected a rod 51 which is provided Aat its forward end with a section 52 pivoted thereto, (see Fig. 3') the section 52 being threaded and fitted with nutsl 53-53. 54 is a sleeve pivoted to a crank 55, the sleeve surrounding the threaded rod 52. The crank 55 is fast on the rock shaft 45 which isoperated by the crank 47. By this means a reciprocating motion is given to the grate frame, the extent of which is regulated by the setting of the nuts 53 53.

5G is an auxiliary air supply which supplies air to the chamber 57 through which the air passes by the passage 58 and is delivered to the furnace just over the coking platform 20.

The operation of the device is as follows: Coal is fed into the hopper 12 and rests upon the deiiector 16 which being pivoted below its center will be raised at the lower end by the weight of coal upon it, thus relieving the pressure of coal in a great measure from the top of the coal feeder 21. The hopper being pivoted at 15 may be turned backward so as to enable the fireman to gain access to the throat 19 and break up any coke which may form there and which is not broken up by the coke breakers. This tilting back of the hopper in the manner just referred to, also gives access to the re tubes of the boiler. lhc coal feeder 21 is connected to a power mechanism by means'of the rod 48, as before described, and when forced forward under the operation of the power mechanism, might have a tendency to ride up on the coal in front of the pusher and allow coal to get under the same. To prevent this action, the

coal feeder is provided on its operative face v yond the throat and the coal which is exposed as soon as it leaves the throat is coked and the coked mass is forced before the coal which follows it off the coking platform and over the breakers Where it is broken up. As the coke When it reaches this point is in a Lible and brittle condition, it will be broken in small pieces by the breakers and dropped down on the grate where it will immediately receive the blast passing through the grates and burn. The reciprocation of the movable grate sections will feed the fire and ash down the grate toward the ash pit.

lVhile I have described what I believe to be the preferred form of my invention, I desire to have it understood that many changes may be made in the form, construction and arrangement of parts without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is l. In a mechanical Stoker, the combination of a coal hopper, a coal feeder resting upon and moving on the bottom of the hopper, and a coal defiector acting automatically under the pressure of the superincumbent coal to relieve the feeder of such pressure.

2. In a mechanical stoker, the combination of a coal hopper, a coal feeder resting upon and reciprocating on the bottom of the hop per, and a coal delector pivoted in the hopper above the feeder acting autmnatlcally under the pressure of the snperincumbent coal to relieve the feeder of such pressure.

3. In a mechanical Stoker, the combination With a coal hopper having a discharge throat to the furnace, breakers in line with said discharge throat in the furnace, said breakers pivot-ally mounted to oscillate alternately in opposite directions and having end faces curved substantially on arcs struck from the pivot points, and fiat top faces.

4. In a mechanical Stoker, the combination with a coal hopper having a discharge throat to the furnace, breakers in line with said discharge throat in the furnace, said breakers pivotally mounted to oscillate alternately in opposite directions.

5. In a mechanical stoker, in combination with a hopper, a feeder reciprocating at the bottom of said hopper, said feeder having projections on its lower forward edge parallel to its path of movement to prevent its ruling the fuel.

- Signed by ine at Birmingham, Alabama,

this 12th day of October, 1905.

HENRY EDWIN PARSON.

Witnesses RUTH S. PATRICK, Aucune lVmoirr. 

